作者gir26354 (微糖去冰)
看板Electronics
標題[問題] PWM漏電流解決方法(H5,ac/dc by pass)
時間Mon Dec 19 13:49:39 2016
大家好,想請問有關於單極性PWM漏電流問題
看了幾篇paper,用PSIM模擬了我的想法結果都跟paper出來的結果不一樣
我覺得我錯的地方是不清楚,除了PWM的四個IGBT,多出的兩個,要怎麼接控制訊號
以AC bypass方法來說,paper(PV併網)都會講下列的話,無法體悟到,煩請大家解惑
The operating principle is now explained for a switching period
in the postive grid half cycle, when grid voltage and current are
positives. In the positive grid half cyle, T5 is on. During the
period of time ton=dT T1 and T4 are on.
類似這樣,反之就是negative grid half cycle, T6 is on.
想請問有讀過的人 可以煩請指點一下嗎 謝謝......
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